Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Single lens creating a diffraction pattern?
- jisbon
- · Replies 6 ·
Finding distance from velocity, force, momentum, mass, and time
- ari-anne
- · Replies 5 ·
[Special Relativity] Test Particle Inside the Sun's Gravitational Field
- Athenian
- · Replies 41 ·
Kinetic energy of alpha and beta particles from radioactive decay
- Hemanta
- · Replies 4 ·
Determine the Electrical potential at a given point
- Karl Karlsson
- · Replies 7 ·
Specific heat and Debye temperature relationship with temperature
- patric44
- · Replies 10 ·
Correct statement regarding a conductor in a magnetic field
- songoku
- · Replies 11 ·
Collision between a block and a curved up-ramp surface
- rashida564
- · Replies 11 ·
Gauge pressure of water oozing out of a pipe
- brotherbobby
- · Replies 11 ·
Why Do Light Beams Need to Be Parallel in Young's Double Slit Experiment?
- Crystal037
- · Replies 7 ·
Calculating the magnetic field of an infinite solenoid
- Adesh
- · Replies 4 ·
The definition of the proper time
- shallod
- · Replies 3 ·
Deriving the electrostatic pressure of a water droplet
- etotheipi
- · Replies 16 ·
Calculating shear stress, direct stress and factor of safety
- jordanbeaton
- · Replies 2 ·
Time period of a periodic function
- Kaushik
- · Replies 3 ·
Time period of an object traveling in an elliptical orbit
- Saptarshi Sarkar
- · Replies 10 ·
Find the velocity of the wind relative to the boat
- gnits
- · Replies 6 ·
Find the force so that all blocks are at rest with respect to each other
- songoku
- · Replies 20 ·
Cat chasing a dog, not in a straight path
- Bipul Neupane
- · Replies 3 ·
Why does treating a pendulum as circular motion give the right acceleration?
- rashida564
- · Replies 22 ·
CD diffraction grating experiment: varying screen distance vs CD separation
- KDPhysics
- · Replies 5 ·
How to know whether motion is simple harmonic motion or not?
- Beelzedad
- · Replies 17 ·
At what angle do we have to kick a ball up the hill for n-rebounds?
- bolzano95
- · Replies 10 ·
Proving Acute Angles from Two Equations
- Saptarshi Sarkar
- · Replies 8 ·
Time it takes for the rocket to fall down
- Noah159
- · Replies 1 ·
Motion in Electric and Magnetic Fields -- (Uni Level Dynamics)
- SianRR
- · Replies 14 ·
What are the possible quantum states of an electron relaxing from n=4 to n=3?
- jisbon
- · Replies 1 ·
How does the rotation of Earth affect the height of a tidal bulge?
- etotheipi
- · Replies 1 ·
Inclined Plane Forces - with a twist
- Spencer25
- · Replies 2 ·
Find the accelerations of all three blocks and the tension in the rope
- rashida564
- · Replies 2 ·
Understanding Total Voltage in Parallel Circuits
- physics_CD
- · Replies 6 ·
Why does my Kirchhoff's loop equation give different current values?
- nmsurobert
- · Replies 6 ·
Analyse the cutting force of this bolt cutter
- BiostudentWouter
- · Replies 4 ·
Average current around a magnetic loop that changes its shape
- Alefan_
- · Replies 5 ·
Physics: How much is this person's femur compressed?
- brittanyr
- · Replies 9 ·
Torque with an oddly shaped lever
- Mike Lessard
- · Replies 1 ·
Tension in a rope wrapped around a shaft, pulling in a mass
- rashida564
- · Replies 16 ·
Problem involving friction, with a mass being pulled up a slope
- Helena Durrant
- · Replies 1 ·
A circuit with switches, capacitators and resistors
- eyespy
- · Replies 6 ·
Magnetic field Calculation of a Square Wire Loop (with a changed segment)
- Physicslearner500039
- · Replies 1 ·
Gamma factor when doing four momentum problems
- bonbon22
- · Replies 3 ·
How can you calculate change in length without force and area units?
- chriscarson
- · Replies 9 ·
Electric field between two capacitor plates (proof)
- Harry17
- · Replies 4 ·
Circuit diagram questions -- 3 Light Bulbs in a 120V circuit
- joshqg
- · Replies 4 ·
Conventional current, magnetic fields and magnetic poles of different diagrams
- joshqg
- · Replies 16 ·
Two movable pulleys lifting a mass
- rashida564
- · Replies 28 ·
Is the Chain Rule Applied to Spherical Polar Coordinates Different?
- physconomics
- · Replies 16 ·
Pressure due to two liquids in a U-tube
- brotherbobby
- · Replies 2 ·
Why can't we choose the reference point at infinity for infinite objects?
- cemtu
- · Replies 2 ·
How do I find the angle and direction of a magnetic field?
- Physicslearner500039
- · Replies 8 ·
Spacetime Physics problem 2-2: scale readings and free-float frame on a trampoline
- benorin
- · Replies 5 ·
Electric field involving 4 point charges in a rectangle
- dcarmichael
- · Replies 1 ·
Ladder problem: why is my normal force calculation wrong?
- Icefire_16
- · Replies 1 ·
How Can I Solve for the Forces on Pruning Shears with Three Subsystems?
- wnvl1
- · Replies 2 ·
How Do You Calculate Time Ratios in Motion with Drag Force?
- tanaygupta2000
- · Replies 2 ·
Momentum transfer of brittle objects
- sbartyc
- · Replies 6 ·
Conical pendulum with height exceeding string length
- Spencer25
- · Replies 7 ·
Destructive interference with two wavelengths in a wedge
- jisbon
- · Replies 1 ·
Damped Oscillator and Oscillatory Driving Force
- physconomics
- · Replies 4 ·
What is the Relationship Between Strain and Change in Length in Hooke's Law?
- chriscarson
- · Replies 31 ·
Electron excited from the ground state to a quantum state
- jisbon
- · Replies 5 ·
Light rays passing through a glass prism
- jisbon
- · Replies 2 ·
What is the work done to move this Charge?
- Reneee
- · Replies 3 ·
Finding Angles in a Double slit experiment
- jisbon
- · Replies 4 ·
Finding the distance in an optics system
- jisbon
- · Replies 9 ·
Velocity of the center of mass of the system
- Amik
- · Replies 1 ·
What Is the Magnetic Field at Point P on the Y-Axis?
- Physicslearner500039
- · Replies 9 ·
Acceleration of a moving wedge with a falling block
- Yalanhar
- · Replies 19 ·
Kinetic energy of a ball rolling down a ramp
- kaloyan
- · Replies 3 ·
Magnetic field due to two loops
- Physicslearner500039
- · Replies 4 ·
Use of hard drive magnets to build an MHD propulsion ship
- fRod57
- · Replies 5 ·
Torque on a Beam Due to Gravity
- cs44167
- · Replies 5 ·
Why doesn't total internal reflection at the critical angle explain missing echoes?
- Nubira20
- · Replies 2 ·
Finding resultant force on charge q from two charges 2Q and Q
- Babybluedino
- · Replies 25 ·
How Do Four-Vectors with Orthogonal Dot Products Determine Each Other's Nature?
- shinobi20
- · Replies 16 ·
Griffiths Introduction to Electrodynamics (Stokes Theorem Corollary)
- cemtu
- · Replies 7 ·
Divergence of 1/r² in spherical coordinates and the delta function
- Apashanka
- · Replies 4 ·
Are T1 and T1' the same tension in a pulley system?
- rashida564
- · Replies 34 ·
How to find tension in a rope at an angle
- Icefire_16
- · Replies 11 ·
System with Pulleys and a Rope That Might Break
- rashida564
- · Replies 26 ·
Projectile Compresses a Spring Gun
- BrandonInFlorida
- · Replies 10 ·
Simple pendulum period with magnetic force below the bob
- Curious_Student
- · Replies 6 ·
Light momentum and torque on a screen with black and mirror sections
- JD_PM
- · Replies 5 ·
Why can't a rope and block be an isolated system?
- Amik
- · Replies 10 ·
Moment of inertia, conservation of angular momentum and energy
- volodymyr379
- · Replies 5 ·
Rate of fall depends on rotation?
- rzyn
- · Replies 35 ·
Water removal from grain bin with 10°C outside air and 18°C exhaust
- Gopher72
- · Replies 19 ·
Circuit Analysis of a diagram with series and parallel circuits
- joshqg
- · Replies 6 ·
Force due to Surface tension here
- Vivek98phyboy
- · Replies 11 ·
Energy of particle when under a central force
- Saptarshi Sarkar
- · Replies 11 ·
Deriving the first-order system for this governing equation
- currently
- · Replies 6 ·
Why does gravity feel weaker at the equator?
- lightlightsup
- · Replies 12 ·
What is the efficiency of the circuit?
- Baiatul122001
- · Replies 4 ·
Is work a vector quantity in physics?
- Amik
- · Replies 35 ·
Volume average of mass function
- Apashanka
- · Replies 14 ·
Forces on the archer's left hand holding a bow
- Bolter
- · Replies 20 ·
Deriving Momentum From Newton's Second Law of Motion
- tomtomtom1
- · Replies 27 ·
Projectile Motion with Air Drag
- trumanf_
- · Replies 3 ·
Entropy change when melting ice then refreezing the water
- yamata1
- · Replies 8 ·
Polynomial fitting for projectile motion with air resistance
- cookiemnstr510510
- · Replies 7 ·